Firestop apparatus

Abstract

A firestop apparatus includes a sleeve member having a sleeve opening extending between first and second ends and configured to receive a conduit member. The second end of the sleeve member has a sleeve member coupling portion with at least one sleeve fastener aperture. An intumescent collar member may be adjacent the second end of the sleeve member. The collar member has an opening aligned with the sleeve opening to receive the conduit member. The collar member is expandable from a non-expanded configuration to an expanded configuration, in which the intumescent collar material expands to seal against the conduit member. The collar member has at least one collar fastener aperture aligned with the at least one sleeve fastener aperture. At least one fastener passes through the at least one sleeve fastener aperture and the at least one collar fastener aperture to fasten the collar member to the sleeve member.

1 . A firestop apparatus configured to be cast within a partition cast from a partition material, the firestop apparatus comprising:
 a) a sleeve member, the sleeve member extending along a sleeve axis and having a first end, a second end axially spaced apart from the first end and a sleeve sidewall extending between the first and second ends, the sleeve member having a sleeve opening extending between the first and second ends and configured to receive a conduit member, the second end of the sleeve member comprising a sleeve member coupling portion having at least one sleeve fastener aperture;   b) an intumescent collar member adjacent the second end of the sleeve member, the collar member having a first collar end abutting the second end of the sleeve member, a second collar end axially spaced apart from the second collar end and a collar sidewall extending between the first and second collar ends, the collar member having a collar opening to receive the conduit member, the collar opening extending between the first and second collar ends, being bounded by a laterally inwardly facing collar inner surface and being aligned with the sleeve opening, the collar member formed from an intumescent material comprising a plurality of intumescent particles within a thermoplastic material and being expandable from a non-expanded configuration to an expanded configuration, in which the intumescent collar material expands at least laterally inwardly to seal against the conduit member, when exposed to temperatures above an expansion temperature, and the collar member comprising at least one collar fastener aperture aligned with the at least one sleeve fastener aperture; and   c) at least one fastener extending through the at least one sleeve fastener aperture and the at least one collar fastener aperture and fastening the collar member to the sleeve member.   
     
     
         2 . The firestop apparatus of  claim 1 , wherein the at least one fastener extends along a fastener axis and the fastener axis is substantially parallel to and laterally spaced apart from the sleeve axis. 
     
     
         3 . The firestop apparatus of  claim 1 , wherein the at least one fastener is laterally outboard of the sleeve sidewall. 
     
     
         4 . The firestop apparatus of  claim 1 , wherein the collar member further comprises a plurality of reservoir projections extending laterally outwardly from the collar sidewall and spaced apart from each other around the perimeter of the collar sidewall, each reservoir projection extending axially from the second collar end to a first reservoir projection end face positioned axially between the second collar end and the second sleeve end, and one of the plurality of reservoir projections comprises the at least one collar fastener aperture. 
     
     
         5 . The firestop apparatus of  claim 4 , wherein the coupling portion of the sleeve member comprises a plurality of flanges extending generally laterally outwardly from the sleeve sidewall, each flange covering a portion of the first collar end and one flange comprises the at least one sleeve fastener aperture. 
     
     
         6 . The firestop apparatus of  claim 4 , wherein the combined volume of the reservoir projections is between about 40% and about 60% of a total volume of the collar member. 
     
     
         7 . The firestop apparatus of  claim 1 , wherein at least a portion of a laterally outer surface of the collar member is exposed to contact the partition material. 
     
     
         8 . The firestop apparatus of  claim 1 , wherein the sleeve sidewall comprises a laterally outer surface to contact the partition material and at least one portion of the collar member is disposed laterally outboard of the laterally outer surface of the sleeve sidewall. 
     
     
         9 . The firestop apparatus of  claim 1 , wherein the second collar end comprises a second axial face and the at least one fastener comprises a head portion positioned adjacent the second collar end and covering at least a portion the second axial face. 
     
     
         10 . The firestop apparatus of  claim 9 , wherein the at least one fastener is a threaded fastener and includes a threaded shaft portion extending from the head portion and passing through the at least one collar fastener aperture and the at least one collar fastener aperture and a nut threadingly engaging the threaded shaft portion, the threaded shaft portion extends axially beyond the nut providing an exposed anchor portion configured to be embedded within and axially restrained by the partition material surrounding the firestop apparatus. 
     
     
         11 . The firestop apparatus of  claim 1 , wherein the collar member is of integral, one-piece construction. 
     
     
         12 . The firestop apparatus of  claim 1 , wherein the collar opening has a first axial cross-sectional area, the sleeve opening has a second axial cross-sectional area and the second axial cross-sectional area is substantially the same as the first axial cross-sectional area. 
     
     
         13 . The firestop apparatus of  claim 1 , wherein the at least one fastener has a greater thermal conductivity than the collar member, whereby when the second collar end is exposed to elevated temperatures, heat is axially transferred from the second collar end toward the first collar end via at the at least one fastener more quickly than via adjacent portions of the collar member. 
     
     
         14 . The firestop apparatus of  claim 1 , wherein the second end of the sleeve member and the first end of the collar member are substantially planar and are disposed on opposite sides of a separation plane positioned axially between the sleeve member and the collar member. 
     
     
         15 . The firestop apparatus of  claim 1 , further comprising a gasket member having a gasket opening aligned with the sleeve opening and a laterally inner edge sized to sealingly contact the conduit member, the gasket member comprising at least one gasket fastener aperture aligned with the at least one sleeve aperture and the at least one collar fastener aperture and the at least one fastener passing through the at least one gasket fastener aperture, the gasket member being positioned axially intermediate the second end of the sleeve member and the first collar end. 
     
     
         16 . The firestop apparatus of  claim 1 , wherein the collar member further comprises at least one attachment member formed from the intumescent material, the at least one attachment member configured to receive an attachment fastener to couple the firestop apparatus to a form member for containing the partition material. 
     
     
         17 . A firestop apparatus for casting into a partition cast from a partition material, the firestop apparatus comprising:
 a) a sleeve member, the sleeve member extending along a sleeve axis and having a first end, a second end axially spaced apart from the first end and a sleeve sidewall extending between the first and second ends, the sleeve member having a sleeve opening extending between the first and second ends and configured to receive a conduit member, the sleeve member comprising a laterally outer sleeve surface exposed to contact partition material surrounding the sleeve member;   b) an intumescent collar member formed from an intumescent material, the collar member having a first collar end adjacent the second end of the sleeve member, a second collar end axially spaced apart from the second collar end and a collar sidewall extending between the first and second collar ends, the collar member having a collar opening to receive the conduit member, the collar opening extending between the first and second collar ends and being aligned with the sleeve opening, the collar member comprising a laterally outer collar surface that is exposed to contact partition material cast around the sleeve member, the outer collar surface being axially spaced apart from the exposed sleeve outer surface, the collar member expandable from a non-expanded configuration to an expanded configuration, in which the intumescent collar material expands at least laterally inwardly to seal against the conduit member, when exposed to temperatures above an expansion temperature of the intumescent material.   
     
     
         18 . The firestop apparatus of  claim 17 , wherein at least a portion of the laterally outer surface of the collar member is positioned laterally outboard the laterally outer surface of the sleeve portion. 
     
     
         19 . A firestop apparatus comprising:
 a) a sleeve member the sleeve member extending along a sleeve axis between a first end and a second end axially spaced apart from the first end, a sleeve sidewall extending between the first and second ends and laterally surrounding a sleeve opening extending between the first and second ends, the sleeve opening configured to receive a conduit member;   b) an intumescent collar member positioned adjacent the second sleeve end and extending axially between a first collar end and a second collar end, the collar member formed from an intumescent material that is expandable in at least the lateral and axial directions when exposed to temperatures above an expansion temperature of the intumescent material, the collar member comprising a collar sidewall portion and a plurality of collar reservoir projections extending laterally outwardly from the collar sidewall portion and spaced apart from each other around a perimeter of the collar sidewall portion, the collar sidewall portion extending between a first sidewall end face at the first collar end and a second sidewall end face at the second collar end and laterally surrounding a collar opening, the collar opening aligned with the sleeve opening and configured to receive the conduit member, each collar reservoir projection extending axially between a second projection end face at the second collar end and a first projection end face spaced apart from the second projection end, a collar fastener aperture extending axially through each reservoir projection;   c) a fastener extending through each collar fastener aperture, each fastener including a securement portion securable to at least one of the sleeve member and the partition to prevent axial movement of the fastener relative to the collar member and a head portion covering at least a portion of the second projection end face to inhibit axial expansion of the intumescent material forming the reservoir projection.   
     
     
         20 . The firestop apparatus of  claim 19 , wherein the sleeve member comprises a sleeve fastener aperture aligned with each collar fastener aperture and each fastener extending through a respective sleeve fastener aperture and fastening the collar member to the sleeve member.